Paper receptacle



Feb. 20, 1945. s, H, BERCH PAPER RECEPTACLE Filed Nov. 30, 1940 2 Sheets-Sheet 1 Feb. 20, 1945. s- H BERCH 2,369,654

PAPER RECEPTACLE Filed NOV. 30, 1940 2 Sheets-Sheet 2 Psanad Feb. zo, 194s UNITED STATES PATENT OFFICE PAPER RECEPTACLE Samuel H. Berch, Beverly Hills, Calif., assigner to The Flexible Vacuum Container Corporation, Los Angeles, Calif., a corporation of Nevada Application November 30, 1940, Serial No. 368,082

l Claim.

The invention relates to a paper receptacle designed to contain milk and milk products, cooking oils and greases, mayonnaise and salad dressings and other food products and constituents thereof which deteriorate when exposed to air and this application is a continuation in part of my application Serial No. 243,626 illed December y2, 1938, and which has now eventuated in Patent No. 2,267,320 issued December 23, 1941.

An oblectof the present invention is to provide a paper receptacle which will begreaseproof, waterand moisture-proof, and air-proof, and which in the process of packaging said goods or products will be adapted to be sterilized by ultra-violet rays or other rays or gas either individually or in large numbers in a container adapted to maintain the sterilized receptacles in such condition until fed to a packaging machine or otherwise lled and sealed.

A further object of the invention is to provide a collapsible receptacle of this character which, when employed for packaging milk, cream and other liquid or semi-liquid products, will enable their contents to be poured or dispensed without liability of human hands coming in contact with a pouring lip or spout, thereby eliminating all liability of contaminating the contents of the receptacles while emptying the same.

Another object of the invention is to provide a paper receptacle adapted to be vacuumized and sealed or sealed without being vacuumized and which will maintain its contents in air-tight, waterproof and greaseproof condition, whereby t he packaged goods may be maintained for an indefinite period in perfect condition.

Another object of the invention is to providea paper receptacle comprising an inner ilexible and collapsible container and an outer collapsible carton adhesively united with the inner container to form a single unit and capable of being easily and quickly lled and sealed and in which the contents of the inner container will be thoroughly protected by the outer carton.

Another object of the invention is to provide a paper receptacle comprising an outer vcollapsible carton and an inner bag or container forming with the carton a unitary structure and adapted to be constructed of a single sheet of pliable material substantially impervious to gas, moisture and oil or grease and adapted to be folded centrally to form two similar side mem. bers adapted to be sealed at their marginal edges while in a flat condition with the free sealed edges in the'central transverse plane of the carton whereby effective hermetical sealing may be accomplished without producing a fold in the seamed areas through which air or moisture may seep or percolate. Instead, however, of forming the side members by folding a single sheet, the inner flexible bag or container may be made of separate sheets and sealed at all of the marginal edges thereof.

It is also an object of the invention to provide a paper receptacle comprising an outer collapsible carton and an inner container of laminated pliable sheet material composed of an inner Plioiilm sheet, an outer paper sheet and a layer of adhesive material uniting the inner and outer sheets, the Pliolm being adapted to enable the inner container to be heat-sealed at the marginal edges while the same are in af; contacting condition.

A further object of the invention is to provide a paper receptacle comprising an inner iiexible container of laminated pliable sheet material composed of an inner Pliolm sheet, an outer paper sheet and a layer of adhesive material uniting said sheets, and an outer collapsible carton having a main body portion adhesively united to the outer paper sheet of the 'inner container and provided with foldable closure mer bers.

A further object of the invention is to provide a paper receptacle including an inner container of pliable sheet material substantially impervious to air, moisture and oil or grease and an outer carton composed of front and rear sections secured to the inner container at the front and back thereof and forming a unitary structure therewith and constituting front; and rear walls and` provided at opposite sides with hinged side members foldable over each other in overlapping relation, the front and rear walls and the side members being provided at the ends of the receptacle with closure aps arranged to cover and conceal the ends of the inner container after the same has been filled and sealed.

It is also an object of the invention to provide a paper receptacle comprising an outer collapsible carton and an inner container formed of pliable sheet material substantially impervious to air, moisture and oil or grease and adapted when lled and sealed to permit expansion and contraction .of its contents due to heat and cold without liability of injuring the inner container lapping closure members adhesively secured together at the free end of one of the closure members, the latter being provided intermediate of its l receptacle being unfolded.

ends witha removable intermediate section or strip adapted to be torn of! to release the closure members to afford access to the inner container,`

hereto appended, it being understood that various` assauts the paperreceptacle shown in Fig. 18; the paper Referring to the drawings, I designates an inner container constructed of a single sheet of pliable laminated sheet material substantially impervious to gas. moisture and oil or grease and consisting of an inner'sheet 2 of Pliofilm or other suitable material having the characteristics of Pliofilm, an outer sheet 3 of paper or other suitable material, and a layer or coating 4 of adhesive material which unites'the inner and outer sheets. The sheet of pliable laminated material is folded centrally to form two side members which, in the formation of the inner container and in the sealing of the same, are heat-sealed atv the marginal edges with the marginal areas of the side members 5 in flat contact with each other and with the sealed seams llying in the central 'y transverse plane of the paper receptacle so that changes in the form, proportions and minor details of construction may be resorted to without departing from the spirit'or sacrificing any of the advantages of the invention.

In the drawings:

Fig. 1 is a plan view of the laminated sheet showing the same before folding.

Fig. 2is a detail sectional view taken on the line 2-2 of Figurel.

Fig. 3 is a plan view showing the laminated sheet folded to form the inner receptacle.

Fig. 4 is a plan view of the front carton section.

Fig. 5 is a view similar to Fig. 3 with a portion of the outer lamination broken away to show the layer of adhesive material.

Fig. 6 is a planview of the rear carton section.

Fig. 7 is a plan view showing the. front and rear carton sections applied to the inner container.

Fig. 8 is a transverse sectional view of the paper receptacle taken on the line 8--8.of Figure I the parts being arranged as shown in Fig. 7.

Fig. 9 is a sectional view showing a plurality of collapsed paper. receptacles arranged one upon another in stacked formation.

Fig. 10 is a perspective view of thevpaper receptacle showing the same unfolded preparatory to filling.

Fig. 11 is a similar view with the top sealed and closed with the exception of the closure flap of the front wall of the carton.

Fig. l2 is a sectional view of the upper portionof the paper receptacle showing the top corx'i- M Fig. 13 is a horizontal sectional view of the pletely closed.

carton in its unfolded or expanded condition.

Fig. 14, is a perspective view ofthe carte-n inverted-'and the inner container sealed preparatory to closing the bottom of the container.

Fig. "i115 is a similar view showing the bottom sealed, and partially closed.

Fig.',i'6 is a sectional view of the paper container in its inverted position after sealing and. closingrt'he bottom. l

Fig. 1l is a perspective View of the paper carton with the top open preparatory to cutting one I of the ears of the inner container.

Fig. 18 is a plan view of a paper receptacle illustrating a modification c-f the invention in which the detachable strip and the means for reclosing the receptacle are formed on the foldable closure members of the side walls of the car- Fig. 19 is a perspective view of the upper end of the sealing may be effected while the side members of the inner bag or container are in flat contact and devoid of any folds or creases which might permit leakage or seepage of air 4or liquid and cause deterioration of the contents of the receptacle. Instead, however, of forming the inner bag or container of a single piece of sheet material, it may of course be made of two separate sheets` with the side edges thereof united by heat-sealing instead of the bag or container being closed by the fold B as shown in the drawings.

' United with the inner flexible container is an outer carton composed of front and rear sections 1 and 8 which are die cut and which are adhesively secured to the outer paper sheet 5 to form a unitary structure. The front'section l, which is constructed of a single piece of paper board or similar material, is provided with foldv foldable to positions at right angles thereto. are

provided at their ends with hinged closure members I2 and I3 and the front wall is provided at one end witha hinged closure member I4 which, when the receptacle is filled. sealed and closed. is arranged in overlapping relation with a similar closure member I5 of the rear section 8 of the carton. The rear section 8 is provided with side wall members f I6 which are of a width less than the side wall members I0 of the front member 'I of the carton and which extend to and terminate at .the central transverse plane of the paper receptacle when the inner container is filled and sealed and the carton is closed around the inner container.

In practice it is preferable to fill the inner container from the bottom end and, when the latter is closed and sealed, it is covered b'y an end closure member I1 of therear section of the carton 4and the adjacent side closure members I3 of the front carton section.

In the closing of the top of the carton, the side closure members I2 are first folded inwardly and the closure'member I5 of the rear section of the carton is folded over the closure members I2. The closure-member I4 of the front section of the carton is then folded over the closure member I5 and is secured to the same by a suitable adhesive which is applied to the surface adjacent the free end ofthe closure member I4. The closure member I4 is provided with an intermediate removable strip `I8 having a tongue or finger piece I9 at one end connected with .the

naps I3 at the aseacu y adjacent portions of the closure .member Il by v scissors, thereby opening the inner container without the hands coming in contact with the same and without liability of contaminating the contents of the container when removing or decanting the same.

Itis preferable vto provide the inner portion of the closure member I4 ofthe front carton section with a slit :.2 adapted to be engaged by a hook-shaped tongue 23 projecting from the free end of the closure member I5 of the rear section of the carton. The hook-shaped tongue has a shoulder 24 adapted to engage the closure member I4 beyond the slit and thereby hold the closure members I4 and I5 in a closed position.

The -containers may be sterilized individually or in a large number in a suitable receptacle where they may be maintained in a sterilized condition until fed into a lling machine or otherwise filled. The sterilization may be effected by ultra-violet rays or by gas orby other suitable means. The inner container is hermetically sealed and, if desired, it may be vacuumized, and whether vacuumized or not, the contents will be maintained for an indefinite period. of time in an uncontaminated condition as ythe inner ilexible container is grease-proof, water-jor moistureproof, and air-proof, so that grease. moisture and sir are eilectually prevented from seeping or- -percolating into the inner receptaleland aiecting the -contents thereof. Also the inner container of pliable sheet material 1s adspte to permit expansion and contraction' its contents when subjected `to heat. or'cold so that there is no liability of the-inner container bursting or otherwise leaking and permitting its contents to deteriorate..

While the rear carton section 8 only is provided with a'closure ilap I I for folding over the bottom end of the receptacle, each of the carton sections may be provided with a closure flap Il, as Awill be readily understood.

In Figs. 18 and 19 of the drawings is illustrated another form of the invention in which an inner ilexi'ble container I' has vsecured to it front and rear carton sections I and`8'. The front section I is provided with hinged sidewall members I0 which have at their upper ends closure mem- :bers I2' foldable over front and rear closure members I4' and I5. One of the side closure members I2 is provided intermediate of its ends with a removable strip I 8 adapted to release the closure members in the same manner as heretofore explained in connection with the removable strip I8. The side closure member I2 which is provided with the removable strip I8' is also Provided with a slot 22 adapted to be engaged by a tongue 23' located at the free -end of the other side closure member I2'- forl resecuring the cli l sure members after the carton has been opened.

The side closure members I2' are constructedsubstantially the same as the front and rear closure members Il and I5 heretofore described, and the operation of sealing and opening the paper receptacle illustrated in Figs. 18 and 19 is substantially the saine as the opening and closing of the paper receptacle illustrated in Figs. 1 to 17, inclusive, of the drawings.

A paper receptacle comprising an inner container .formed of a single sheet of pliable material substantially impervious to air, moisture and oils or grease and folded to form two similar side portions and sealed at the marginal edges thereof, and an outer carton composed 0f separate front and rear sections attached to the side -portions of said sheet to form s. unit with the inner container, said front and rear carton sections forming front and rear walls and having 1 hinged side wall sections foldable over each other in overlapping relation. the hinged side wall sections of one ofthe carton sections extending the full width of the carton and the side wall sections of the other carton section terminating at the central transverse plane of the carton. and/foldable closure members carried by the carton sections and arranged to cover the ends of the linner container. Y v

SAMUEL H. BERCH. 

